Cement-brick machine.



F. HART.

CEMENT BRICK MACHINE. APPLICATION HLED SEPT-28,19l4.

Patented Jan. 9, 1917,

2 SHEETSSHEET lfir :j i inventor by 1/2 I y v l Attorneys F. HART.

CEMENT BRlCK MAC APPLICATION man SEPT-28.11914.

HINE.

Patented Jan. 9, 1917.

2 SHEETS-SHEET 2.

Inventor \Nitnesses Attorneys improve generally r FRANCIS HART, or ROCKAWAY, oaneon.

CEMENT-BRICK MACHINE.

Specification of Letters Patent.

Patented Jan. 9, 1917,

Applicationfiled September 28,1914. -"ser'ia11v6. 863,940.

To all whom it may concern Be it known. that I, FRANCIS HART, a citizen of the United States, residing at Rockaway, in the county ofTillamook and State of Oregon, have invented a new and useful Cement-Brick Machine, of which the following is a specification.

The device forming the subject matter of this application is adapted to .be employed for making concrete bricks or blocks.

The invention comprises a reversible mold, and the present invention aims to provide novel means whereby the mold may be supported, the construction being such that molds of different 1e gths may be accommoe dated readily. a

Another object of the invention is to proreadily into and out of the way position within the contour of the frame, thereby facilitating the insertion of the aggregate into the mold and thetamping of the aggregate into the mold, notably when the device is manipulated by a single operator.

It is within the scope of the invention to and to enhance the utility of devices of that invention appertalns.

With the above and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of'construc'tion hereinafter described and claimed, it being understood that changes inthe precise embodiment of the invention hereindisclosed can be made within'ithescope of what claimed without departing from the spirit of the invention.

In the accompanying drawings z Figure 1 shows in front elevation, a brick making machine embodying; one form of the present invention,- parts being broken away; F ig.-' 2

is aside elevation ofv thestructur'e shown in Fig. 1;. Fig. 3 isa fragmental perspective depicting a portion er the front plate of the mold; Fig. a is a plan illustrating in detail one of the hinge elements whereby the front plate shown in Fig. 3 is adjustab'ly assembled with the frame. of the machine; Fig. 5

. is a top plan of the mold; 6 is a side elevation of the mold; Fig. 7 is a plan showing. one of the face, plates;.Fig. 8 is a 1ongitudinal section of the structure shown in Fig. 7; Fig. 9 is a plan delineating. another of the face latesgrig. 10 is a longitudinal section o'fthe face plate shown in Fig. 9.

the uprights 1 vide a mold support which may be swung type to which the present In carrying out the present invention there is provided a supporting frame comprising forward uprights 1 connected at their upper. ends by a tie bar 2 and connected intermediate theirend's by a tie bar 2 The supporting frame includes rear legs 3, the legs 3 being united with the forward uprights l by means of lower braces a and upper 'bracesfi, the upper braces 5 projecting forwardly beyonduprights 1, as clearly indicated by the reference. character 6 in Fig. 2. J Supported by the upper braces 5 is a platform 7. At the sides of the machine, and the rear'legs 8' are united by guide plates. 8 provided with longitudinal slots 9, the functions of which will be brought out hereinafter.

Mounted to reciprocate upon the platform 7 toward and away from the front of" the machine are division plates 10, the forward, upper corners of which are provided with notches 39.v "The division plates 10 are united by a back plate 11 which forms the rear faces of the bricks during the molding operation.

It is within the Sco e of the invention that crank 15 on one end of the shaft, the shaft carrying. pinions l6 meshing into, racks 17 fixed to the frame of the machine. The shaft 12 passes through the slots 9 in the guide plates 8, the slots permitting the shaft and the divisionplates 10 to move forwardly and rearwardly.

Located above the mechanism last de scribed is a hopper adapted. to. receive the aggregate prior tothe making'of thebricks. The hopper includes. a bottom 18, side walls 19 anda back 20,.the] hopper being open. at

the front, so that. the aggregate may be scraped out of the hopperinto the molds, as will be described hereinafter. Secured to the inner faces o'fthe forward uprights 1 as shown best in Fig. 1 are guides 21. The ends of a tamper support, in the form of a. bar. 22, are mounted for vertical reciprocation in the guides 21. Attached to the tamper su port 2'2 are depending black-- ets 23 to which are pivoted or otherwise secured tampers 24. To each end of the tamper support 22 is attached a flexible element 25, the flexible elements 25 being carried upwardly over sheaves 26 journaled in the uprights 1, weights 27 or their mechanical equivalents being connected with the lower, depending ends of the flexible elements 25.

A means is provided for depressing the tamper support 22 so that the tampers 24 may exercise their function. To effect this result, alever 28 is provided, the same being a composite structure and including a forwardly projecting handle 29 and rearwardly extended bifurcations 30, the bifurcations 30 being unit (1 by pivot connections 31 with the tampersupport 22 I The bifurcations 30 of the lever 28 extend beneath the tie-bar 2 and the latter-forms a fulcrum for the lever. It will be. obvious that by swinging the handle portion 29 of the lever 28 downwardly, the tamper support tampers 24 will be depressed.

The invention includes a front plate 32 constituting a part of the mold, the front plate preferably being made up of a plurality' of sections 33 asshown in Fig. 3, the constituent parts of the front plate being united by a strip 34. 1 By means of hinges 35, the extremities of the front plate 33 are pivoted to the platform 7 of the machine frame. Those hinge elements 35 which are assembled with the platform are longitudinally slotted as shown at 37, to receive securing elements 36 thus providing for an adjustment in the position of the front plate.

The mold includes a pallet 38 which is placed in the machine frame upon the platform 7 beneath the tampers 24, these elements being raised by the action of the weight 27. The hinged front plate 32 is swung upwardly and rearwardly from the position shown in Fig. 3, so as todefine the front of the mold. Terminal walls 40, shown in Fig.6 are placed upon the pallet 38. If desired, face plates 41 may be placed against the pallet 38" and face plates 43 may be disposediat right anglesto the face plates 41, the face plates 41 and 43, respectively, being recessed or otherwise constructed as shown at 42 and 44, to give the desired exterior finish to thebrick. 1 f a Through the instrumentality of the crank 15,,the shaft 12 is rotated, the shaft moving in the slots 9 of the guide plates 8 and the pinions 16 meshing into the racks 17. By this operation, thedivision plates 10 will be advanced, the forward ends of the division plates passing between the constituent parts 33 of thefront plate 32 and the strip 34 -on the front platebeing received in the notches 39 of the. division plates. The material in the hopper isthen scraped forwardly into the mold and is tamped at intervals 22 and the through the medium of the lever 28, the tamper support 22 and the tampers 24. After the molds have been filled, a cover plate 45 is applied thereto, the same being held in place by pivoted clips 46 connected with the pallet 38. After the bricks have thus been formed, the division plates 10 are retracted through the means of the shaft 12 and attendant parts. Then the mold is inverted and disposed at the front of the machine, as shown in Fig. 3. To-effect this result, a movable means for supporting the mold is provided, and a means is provided whereby the axial rotation or inversion of the mold is initiated.

Secured to the forward uprights 1 as shown in Fig.1 are bearings 47 in which are journaled supports 48 of angular form, the same comprising laterally extended arms 49. The arms 49 normally lie in an out-of-theway position within the contour of the frame of the machine, but when it is desired to support the mold upon the arms 49, thesupports 48 that the arms 49 are forwardly presented as shown in Fig. 3.

In order to rotate or invert the mold, initially, a shaft 50 is mounted in the lower braces 4 of the machine frame and upon the shaft 50 is fulcrumed intermediate its ends a pedal 51. To the rear ends of the pedal 51 are attached upwardly extended plungers 52 mounted to slide in openings 53 in the platform 7.

Now after the bricks have been completed as hereinbefore set forth, the pedal '51 is tilted on its fulcrum 50, causing the plungers 52 to rise. The plungers engage the mold and invert or rotate the same initially, the rotation or inversion of the mold being completed manually, and the mold ultimately being deposited upon theforwardly extended arms 49 of the supports 48, as shown in.Fig.-2. x

The clips 46 are disconnected from the cover plate 45, and the pallet 38, the end walls 40 and the face plates 41 and 43 (if the latter are employed) are removed. A plurality of bricks now rest free and unencumbered upon the plate 45 and the latter, together with the molded bricks, may be removed from the machine.

The operation of the structure has been dealt with step-by-step hereinbefore, but, referring generally to the functions of certain parts, it will be understood that the shaft 12 and attendant mechanisms constitute means for advancing and retracting the division plates 10. The tampers 24 are raised through the instrumentality of the weights 29 and are depressed by means of the lever 28. The mold is tilted initially after the bricks are completed, by means of the pedal 51'and the plungers 52. The supports 48549 uphold the mold after the are rotated in the bearings 47 sobricks have been formed, and after the mold has been inverted as shown in Fig. 3. By unloosening the clips 46, the mold may be taken down, leaving the completed bricks,

standing upon the plate 45. 7

he plungers 52 lie in the path of the transverse arms 49 of the mold supports, and limit the inward movement of the arms 49 when the latter are swung within the contour of the frame. Consequently, the arms 49 are maintained in accessible positions. Noting Fig. 1 it will be observed that the arms 49 of the mold supports lie between the clips 46. Consequently, the clips may be detached readily from the member 45 and there is no jarring of the member 45 and the finished bricks when the clips. '46 are detached, as would be the case if it were necessary, referring to Fig. l, to withdraw the.

lower ends of the clips 46 from between the arms 49 and the member 45.

Having thus described the invention, what is claimed is r.- V In a device of the class described, a frame; a front plate hinged to the frame; a mold upheld by the frame and cooperating with Copies of this patent may be obtained for five cents each, by addressing the 7 frame,

my own, I have hereto aflixed my adapted to be swung beneath the mold to support the same, the transverse arms be- 1ng adapted to be swung toward and away from each other to accommodate molds of different lengths, the transverse arms being rearwardly movable to assume positions within the contour of the frame; a plunger the upper end of which is mounted to slide directly in the frame, the plunger lying in the path of the transverse arms when the latter the upper end of the plunger operating beneath the mold to secure an initial reversalof the mold; and framesupported means for actuating the plunger.

In testimony that I claim the foregoing as signature in the presence of two witnesses.

' FRANCIS HART.

Witnesses:

JOSEPH HAWKiNS, J AMES N. DAVIS.

Commissioner of Patents,

Washington, D. G.

are swung within the contour of the V 

